—— 请按键盘 空白键 开始游戏 ——

每个数学问题都有一个解决方案;你只需要找到正确的视角。
Grief is love turned into an eternal missing.
To study history is to learn the grammar of time.
The most important thing in science is not to solve problems, but to ask the right questions.
过去充满了声音——我们只需要倾听。